User blog comment:Neilneil1001yt/Neil's Legendary Location Predictions/@comment-33168092-20180212125521

I think for cosmog, it would be a lot harder than just cosmog jumping into your bag. I think you catch necrozma, and then solgaleo and lunala come down, and you have to do a wild double battle with them. You cant catch them, but when the battle is over, the pokemon go ack into the sky and the roam, and you have a cosmog egg.